John w



(No Model.)

J. W. EISENHART.

POSITIVE SHUTTLE MOTION 'FOR LOOMS.

Patented Mar. 5, 1889.

niTnD Srnins "reni- @trice JOHN IW. EISENHART, OF YORK, PENNSYLVANIA.

POSITIVE SHUTTLE-MOTION FOR LOONlS.

SPECIFICATION forming part of Letters Patent N o. 399,138, dated March 5, 1889.

Application tiled July 20, 1888. Serial No. 280,549. (No model.)

To all '107mm it 12mg/ concerne Be it known that I, JOHN XV. EISENHART, a citizen of the United States, residing at York,

in the county ot York and Sta-te of Pennsyll vania, have invented certain new and useful Improvements in Positive Shuttle-Motions for Looms, ol' which the following is a specification, reference being had therein to the ac companying drawings.

This invention relates to that class of looms in which the shuttle is positively moved, and which are designed more particularly for weaving wire fabrics.

In the drawings, Figure i is asectional view showing one of the shuttle-operatin g arms and the frame of theloom in which it is supported, together with the shuttle, in side elevation. Fig. 2 is a sectional plan view ot two shuttle operating arms and adjacent mechanism, said arms heilig shown in the position assumed when exchanging the shuttle; Fig. 3, a detail perspective view ot one end of one oi' the said arms, showing the shnttlc-catch-operating mechanism; Fig. i, an end view of the shuttle cud ot' one ol' the arms.

Referring to the annexed drawings, A designates the supporting-tramc, in which the shuttle-arms li and ('1 are guided and supported, the latter being reciprocated in any suitable manner h v means ot the pitmen D. Each arm is preferably square in cross-sec` tion and tubular in form, one end being Vclosed by a plug, E, on which formed an eve, F, for connection with the pitman I).

In thc plug ll is jonrnaled one end ot a sprliig-actuated rocleshatt, G, the said end extending beyond the said plug and carrying a set-collar, ll. and an adjustable finger, I. The shaft extends nearl)v to the other end of the arm, in the interior thereof, or ou the eX- terior, it' desired, and is there supported by a block, K, or other suitable bearing, beyond which it carries a cam, Il, a lever, eccentric, or equivalent device. To the side of each arm is attached a spring-latch, M,its nose extending through the side of the said arm and carrying a lug, N, to the rear of the said nose and also extending through the arm, suitable siots being provided for the purpose. The cam L is arranged opposite the lug N, so that as it is turned, as hereinafter explained, it will force the latch outward, thc resiliencyof mon in machines of this character.

the latter returningit when the said cani is moved in the opposite direction.

The shuttle O may be ot any suitable construction, with ends formed to enter the arms and provided with notches to receive the noses of the latches.

From the frame A extend offsets P in the direction of the retraction of the arms and to one side ot' the line of travel, each oiiset being adjacent to the rear end of the respective arm. Each oiiset carries a curved dog, R, spring-actuated, and pivotall y attached by means ot` a spindle, S, so as to move on the face of the said offset adjacent to the shuttle- Operatin g arm. The downward movement of the dog is limited by a stop-pin, T, prefer ably secured to the said dog.

In operation the arms are inadeto alternately approach and recede, exchanging the shuttle at each forward movement, as is co1n The arm carrying the shuttle is caused to reach the central position at a slightly later time than the receiving-arm, for the reason that will presently appear. As the receivingarm is moved toward the central position, the ringer on the rock-shaft will engage the dog R, and, riding over its curved face, will turn the shaft on its axis, moving the cam against the springlatch, forcing it away from the arm, and when the finger has passed the dog the parts will return to their normal position. Upon a slightly further forward movement the shuttle will be engaged by the latch upon the said receiving-arm, and in the case of the arm carrying the shuttle the finger will ride up on the curved dog to turn the shaft on its axis, moving the cam against the spring-latch and forcing it away from the arm, thus releasing the shuttle and allowing the receiving-arm to recede before the finger drops over the curved dog, and the latch be thus returned to its normal position. When the arms are retracted, the iingers will pass under the dogs, the latter moving out of the way without turning the shaft.

In Fig. 2 the arm C has received the shuttle, having moved a sufficient distance torwe rd for the finger to be relieved from the dog and the latch to engage the shuttle, and has commenced the backward movement, while the arm B, which carried the shuttle to IOO the center, advancing more slowly than the other arm, has not had the finger released from the dog; hence the shuttle is Withdrawn before the spring-latch falls. rlhis operation is alternately repeated by each arm.

As it is evident that the above description, when taken in commotion with the drawings, would suggest modifications of the device to a skilled mechanic, I do not limit myself tothe 1o precise Construction and arrangement of parts described, as the same maybe modified withontdeparting i'romthe spirit of my invention.

I may employ any suitable means Afor operating the pitmen D D-such, for instance, as

1 5 that shown in United State Patent No. 365,420, granted .I une 28, 1887, to J. Vidmer. The dog or curved arm R is held in its normal position, as shown in Fig. 3, by means ot' a small coiled spring, a, surrounding the pin S and 2o suitably secured. The rock-shafts G are returned to their normal positions, after the fingers I drop oft of the inner ends of the dogs R, by means of the spring-catches M, the lugs N on these catches being kept normally pressed against the inclined periphery of the cams L by means of ihe resiliency of' the catches.

Having thus l'ully described my invention, what I claim as new, and desire to secure by 3o Letters Patent, is-

l. In a positive shuttle-motion for looms, the eombinatioil, with a reciprocating' shuttle-operating arm, of a latch for engaging the shuttle, and carried by the arm, a rocksl1ai`t 3 5 also carried by the arm and provided with a cam or equivalent device for moving'the latch, and means, substantially as described, for operating the shaft.

2. In a positive shuttle-motion for looms, the combination, with a reciprocating arm, of a latch on the arm for engaging the shuttle, a rock-shaft carried bythe arm and provided at one end with a cam or equivalent device and at the other end with a finger, and a dog arranged in the path of the said finger to operate the said sha-ft, substantially as described.

3. The combination of a frame, the reciprocating tubular carrier-arms mounted in this frame, spring-latches upon the inner ends of these arms for engaging the shuttle, rockshafts journaled inside of these tubular arms and provided with cams on their inner ends for operating the shuttle-latches, adjustable fingers on the outer ends of the said rockshaffts, means for adj nsting these fingers, and pivoted dogs for operating the said rock-shafts and fingers, substantially as described.

4. The combination of a frame, reciprocating carrier-arms, spring-latches carried by these arms, rocleshafts carried by these carrier-arms and provided on their inner ends with cams for operating the said springlatches, iingers on the outer ends of these rock-shafts, curved dogs R, pivoted to the said frame in line with the said ngers, and springs for keeping' these dogs normally pressed downward, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN XV. EISENHART.

YY'Vitnesses:

Guns. D. Jos'r, C. M. ALEXANDER. 

